CN106745757A - The device and method of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage - Google Patents
The device and method of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage Download PDFInfo
- Publication number
- CN106745757A CN106745757A CN201710208635.4A CN201710208635A CN106745757A CN 106745757 A CN106745757 A CN 106745757A CN 201710208635 A CN201710208635 A CN 201710208635A CN 106745757 A CN106745757 A CN 106745757A
- Authority
- CN
- China
- Prior art keywords
- outside
- deflector
- vertical inside
- circulated
- vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The device and method of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage of the invention, including the city domestic sewage water tank for setting gradually, vertical inside and outside four circulated aeration tanks and vertical sedimentation basin, the city domestic sewage tank top delivery port is connected with vertical inside and outside four circulated aeration tank top side water inlets by water pipe, intake pump is provided with water pipe and vertical inside and outside four circulated aeration tank bottoms are inserted into, vertical inside and outside four circulated aeration tank opposite side top delivery ports are connected with the water inlet at the top of vertical sedimentation basin, 2 first deflectors and the second deflector of horizontal L-type are respectively arranged with from top to bottom in vertical inside and outside four circulated aeration tanks.Small water sewage of the present invention for carbon-nitrogen ratio less than 5, increases anaerobic/anoxic space, improves transfer rate of the polluter each section of aeration tank, advantageously in sewage nitrogen removal.
Description
Technical field
The invention belongs to technical field of biological sewage treatment, and in particular at a kind of vertical inside and outside four circulations continuous flow process
The device of municipal sewage is managed, the invention further relates to a kind of method of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage.
Background technology
With social development and the quickening of urbanization process, urban wastewater discharge increasingly increases.According to statistics, only 2014
First quarter China's urban wastewater treatment firm is accumulative to build up 3622, and day processes sewage ability 1.53 × 108m3, operating load rate reaches
79.9%.And municipal sewage treatment is a high energy-consuming industry, data display municipal sewage plant's average current drain value reaches
0.285kWh/m3, total electricity consumption occupies the 60% of Sewage Plant operating cost, so reduce sewage disposal energy consumption can effectively subtract
The operation cost of few sewage treatment plant, improves the utilization ratio of fund.
Municipal sewage treatment both domestic and external mainly uses activated sludge process, and aerobic reaction tank needs a large amount of in activated sludge process
Aeration, for the organic matter in aerobic degradation water.According to statistics, core biochemical treatment unit power consumption is accounted in Sewage Plant
The 50%-70% of whole technique, is concentrated mainly in air blower, agitator and interior external reflux pump, and interior external reflux pump herein is made
Be backflow nitrification liquid and sludge.In activated sludge process, aeration energy consumption accounts for the 55.6% of total energy consumption.
Traditional handicraft processes sewage as shown in figure 1, municipal sewage passes through constant flow pump 21 sewage stable feeding from raw water water tank 1
Enter in traditional reaction tank 1 that dischargeable capacity is 36L, air compressor 23, spinner flowmeter 24 are connected outside it；The water outlet of aeration tank 2
Enter vertical sedimentation basin 3 by difference in height, water outlet is flowed out through downflow weir 31 after precipitation, mud discharging mouth 32 is provided with sedimentation basin 3, it is dirty
Mud is back near the aeration tube of aeration tank through reflux pump 33.
The purpose of aeration is the microorganism in aeration tank in dissolved oxygen, organic matter and activated sludge is sufficiently mixed contact,
So as to the degradation process for accelerating pollutant improves sewage treating efficiency.Using horizontally disposed, aerator point more than traditional aeration mode
Aeration tank bottom is dispersed in, bubble is begun to ramp up by aerator outlet, and lifting height is the distance of aerator and the water surface, distance phase
To shorter, the limited time with waste water.Therefore there is oxygen transfer efficiency relatively low, sewage is insufficient with bubble contact to wait limit
System.Due to the limitation of aerator position, aeration outlet has the distance of 15-20cm with aeration tank bottom, and current cannot have influence on
Aeration tank bottom, thus results in the deposition of aeration tank bottom, utilization rate reduction.
With our people's growth in the living standard, the change of dietary structure, the groups of contaminants of municipal sewage into and ratio
Also there is corresponding change, nitrogen content increases, and occurs in that the situation of low ratio of carbon to ammonium, and traditional biological denitrification process is played to denitrogenation of waste water
Important function, but still suffer from many problems.Substantial amounts of oxygen need to be consumed as ammonia nitrogen is nitrified completely, power consumption is increased.To low
The waste water of carbon-nitrogen ratio, also needs additional carbon, and technological process is long, and floor space is big, the shortcomings of capital expenditure is high.
The content of the invention
To achieve the above object, the present invention provides a kind of dress of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage
Put, solve that reactor denitrification ability in the prior art is low, hardly degraded organic substance can not be removed, aeration tank bottom deposition etc.
Problem.
Present invention also offers a kind of method of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage.
The technical solution adopted in the present invention is that vertical inside and outside four circulate the device of continuous flow process Treating Municipal Sewage,
Including the city domestic sewage water tank, vertical inside and outside four circulated aeration tanks and the vertical sedimentation basin that set gradually, the city life
Sewage tank top delivery port living is connected with vertical inside and outside four circulated aeration tank top side water inlets by water pipe, the water pipe
On be provided with intake pump and be inserted into vertical inside and outside four circulated aeration tank bottoms, the vertical inside and outside four circulated aeration tank opposite sides
Top delivery port is connected with the water inlet at the top of vertical sedimentation basin, in vertical inside and outside four circulated aeration tanks from top to bottom
2 first deflectors and the second deflector of horizontal L-type are respectively arranged with, the riser of first deflector is located at vertical inside and outside four
Circulated aeration tank water inlet side and riser tail end is down, the transverse slat tail end of first deflector is located at vertical inside and outside four circulation
Have between aeration tank mouth of a river side, the first deflector transverse slat and riser and vertical inside and outside four circulated aeration tank both sides inwalls
Space, the riser of second deflector is located at vertically inside and outside four circulated aeration tank mouth of a river sides and riser tail end is down, described
Second deflector transverse slat tail end is located at vertical inside and outside four circulated aeration tank water inlet sides, the second deflector transverse slat and riser
There is space, the vertical inside and outside four circulated aeration tank water inlet sides between vertical inside and outside four circulated aeration tank both sides inwalls
Bottom be provided with boring aeration pipe, the boring aeration pipe extension is connected with air pump and gas is provided with boring aeration pipe
The center of flowmeter, first deflector and the second deflector is provided with suspension type filler.
It is of the invention to be further characterized in that,
Further, the vertical sedimentation basin top is provided with downflow weir, and the vertical sedimentation basin bottom is circumscribed with
Discharge pipeline, the vertical sedimentation basin bottom is provided with the bottom of refluxing opening and vertical inside and outside four circulated aeration tank water inlet sides
By pipeline communication, sludge reflux pump is provided with the pipeline.
Further, the transverse slat length of first deflector and the second deflector accounts for vertical inside and outside four cyclic aerations respectively
The riser height of the 3/4 of pond total length, first deflector and the second deflector accounts for vertical inside and outside four circulated aeration tanks respectively
The tail end riser of the 2/5 of height, the first deflector riser tail end and the second deflector is away from vertical inside and outside four circulated aeration tanks
Distance from bottom is respectively 1/2 and 1/10 of available depth in vertical inside and outside four circulated aeration tanks, the volume of the suspension type filler
It is 1/5 of spatial volume between the first deflector and the second deflector.
Further, the riser of first deflector and the second deflector is respectively with a vertical 5-15 ° of angle, institute
The transverse slat of the first deflector and the second deflector is stated respectively from the horizontal by 5-15 ° of angle.
Further, the vertical inside and outside four circulated aeration tank delivery port sides are provided with temperature and dissolved oxygen probe, institute
State the space that temperature and dissolved oxygen probe are inserted between deflector transverse slat and vertical inside and outside four circulated aeration tank inwalls.
Another technical scheme of the present invention is that vertical inside and outside four circulate continuous flow process Treating Municipal Sewage
Method, specifically follows the steps below：
Step one, configures sludge
Sludge source is prepared sludge concentration and is existed in municipal sewage plant aeration tank in vertical inside and outside four circulated aeration tanks
The sludge of 3000-4000mg/L is inoculated with, it is vexed expose 1-2 days after start water inlet, inflow daily gradually increase make microorganism by
Gradually it is applicable, is continued to run with 1 day to after reaching design water, startup stage terminates, and the experiment startup optimization time was at 1 week or so；
Step 2, aeration prepares
System operation：Continuous stream operational parameter control, sludge concentration is 3000-4000mg/L in reaction tank, is started simultaneously at
Continuous aeration, in 2.0-3.0mg/L, hydraulic detention time is 8h to Dissolved Oxygen concentration Control, and return sludge ratio is 100%；
Step 3, aeration process
After air enters vertical inside and outside four circulated aeration tanks, minute bubbles are divided into and along the first water conservancy diversion by boring aeration pipe
Plate riser enters pond body, and then bubble rises to the first deflector transverse slat, is stopped by it, horizontal to the first deflector along horizontal movement
Edges of boards edge, with water movement part bubble in deflector region below, is moved downward by the stop of wall, upper with what is be aerated
Flowing is risen, clockwise vortex, i.e., first race way is formed；The race way peripheral liquid and oxygen directly contact, because
This dissolved oxygen content is higher to form hyperoxia area, molten in being internally formed with the consumption and internally diffusion rate influence of dissolved oxygen
Solution oxygen region；Remaining bubble continuously rises to the second deflector, and bubble continues rising to be stopped by the second deflector, is divided into three
Point, a part is moved downward with current, returns to the first deflector lower area, and supplement aeration rises the negative pressure space for causing, then
Rise to form Two Areas circulation with bubble；Due to this part water movement slowly and without high-solubility oxygen diffusion, therefore formed
LDO circulation；Another part does swirling motion between the first deflector and the second deflector, forms counterclockwise movement
The 3rd circulation, the portion gas are because by first circulation consumption and the diffusion of partial oxidation, oxygen content is high, therefore formed
Circulation be Zhong Yang areas；Last part continues to rise the effusion water surface, and a small amount of mixed liquor is along the second water conservancy diversion back during this
Return to the first deflector bottom and participate in circulation, form the 4th race way, oxygen content is minimum in the portion gas, therefore for low
Dissolved oxygen area；
Between the first deflector and vertical inside and outside four circulated aeration tank base plates dissolved oxygen concentration from center to the periphery gradually
Raise, organic matter degradation occurs mainly in hyperoxia region, carbon dioxide directly can be herein oxidized to for small organic molecule
And water；For molecular structure complexity, being difficult to biodegradable organic matter can be after middle oxygen or low oxygen area completes acidification hydrolization
This is transported to, oxidizing process is continued to complete；Anoxic and the presence in middle oxygen region, for microorganism denitrification provides favourable bar
Part, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification.
The beneficial effects of the invention are as follows：
(1) due to increased two pieces of deflectors, the path of oxygen diffusion motion is limited, therefore creates bigger anaerobism
And anaerobic environment, the hardly degraded organic substance in sewage is hydrolyzed into degradable substance in anaerobic environment, circulated by top
Move to anaerobic environment and be further decomposed as degradable small-molecule substance, it is most aerobic to bottom through circulating for both sides afterwards
Environment is decomposed removal.This technique improves the clearance of hardly degraded organic substance, reduces content of organics in water outlet.
(2) this technique further have compressed the ratio of aerobic zone, improve the space proportion of anaerobic zone, create more added with
Beneficial to the environment of nitration denitrification.For carbon-nitrogen ratio less than 5, content of organics is less and waste water that nitrogen is more, organic matter
With the important function for serving as denitrifying carbon source, therefore this rational technology make use of aeration pool space, improve LDO
Space；Simultaneously by decomposition of the anaerobic/anoxic environment to hardly degraded organic substance in water, the small-molecule substance of generation is directly as anti-
Nitrification carbon source, to denitrification process, relatively conventional reactor substantially increases denitrification ability to ringing conveying carbon source, together in addition
When suspension type filler is provided with due to the race way between two deflectors, be conducive to attached growth of microorganisms, biomembrane exists
Filler surface is formed, the function with film biological removal of nitrogen, and denitrification ability improves 30% compared with traditional aeration tank.
(3) bubble sprayed by aerator, stops, first vertical motion transverse movement again, after spilling through first deflector
Stopped by second piece of deflector again, then by a vertical motion and transverse movement, finally escaped out the water surface.So reaction tank
Structure make holdup time of the bubble in sewage more long, stroke increase, this makes aerobic microbiological obtain more oxygen amount, plus
The big utilization rate of oxygen, in the case where aeration environment reduces, it is ensured that the clearance of organic matter and ammonia nitrogen.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of Traditional continuous flow Process for Treating Municipal；
Fig. 2 is the apparatus structure schematic diagram of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage of the invention；
Fig. 3 is vertical inside and outside four circulations of the method for vertical inside and outside four circulations continuous flow process Treating Municipal Sewage of the invention
React schematic diagram in aeration tank.
In figure, 1. city domestic sewage water tank, 2. vertical inside and outside four circulated aeration tanks, 3. vertical sedimentation basin；
21. intake pumps, 22. temperature and dissolved oxygen probe, 23. first deflectors, 24. second deflectors, 25. boring aerations
The air pump of pipe 26., 27. gas flowmeters, 28. suspension type fillers；
31. downflow weirs, 32. mud discharging mouths, 33. sludge reflux pumps.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The device of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage of the invention, as shown in Fig. 2 including setting successively
City domestic sewage water tank 1, vertical inside and outside four circulated aeration tanks 2 and the vertical sedimentation basin 3 put, the city domestic sewage water
The top delivery port of case 1 is connected with the vertical inside and outside top side water inlet of four circulated aeration tank 2 by water pipe, is set on the water pipe
There is intake pump 21 and be inserted into the vertical inside and outside bottom of four circulated aeration tank 2, the vertical inside and outside opposite side top of four circulated aeration tank 2
Portion's delivery port is connected with the water inlet at the top of vertical sedimentation basin 3, in vertical inside and outside four circulated aeration tank 2 from top to bottom
2 first deflectors 23 and the second deflector 24 of horizontal L-type are respectively arranged with, the riser of first deflector 23 is located at vertically
The water inlet side of inside and outside four circulated aeration tank 2 and riser tail end is down, the transverse slat tail end of first deflector 23 is located at vertical
The delivery port side of inside and outside four circulated aeration tank 2, the transverse slat of the first deflector 23 and riser and vertical inside and outside four circulated aeration tanks 2
The riser between the inwall of both sides with space, second deflector 24 is located at the vertical inside and outside delivery port one of four circulated aeration tank 2
Side and riser tail end is down, the transverse slat tail end of second deflector 24 is located at the vertical inside and outside water inlet one of four circulated aeration tank 2
There is space between side, the transverse slat of the second deflector 24 and riser and the vertical inside and outside both sides inwall of four circulated aeration tank 2, it is described
The bottom of the vertical inside and outside water inlet side of four circulated aeration tank 2 is provided with boring aeration pipe 25, and the boring aeration pipe 25 is outside
Prolong and gas flowmeter 27 is connected and be provided with boring aeration pipe 25 with air pump 26, the water conservancy diversion of first deflector 23 and second
The center of plate 24 is provided with suspension type filler 28.
The top of the vertical sedimentation basin 3 is provided with downflow weir 31, and the bottom of the vertical sedimentation basin 3 is circumscribed with discharge pipeline
32, the bottom of the vertical sedimentation basin 3 is provided with refluxing opening and leads to the bottom of the vertical inside and outside water inlet side of four circulated aeration tank 2
Piping is connected, and sludge reflux pump 33 is provided with the pipeline.
It is total that the transverse slat length of the deflector 24 of first deflector 23 and second accounts for vertical inside and outside four circulated aeration tanks 2 respectively
The 3/4 of length, the riser height of the deflector 24 of first deflector 23 and second accounts for vertical inside and outside four circulated aeration tanks 2 respectively
The tail end riser of the 2/5 of height, the riser tail end of first deflector 23 and the second deflector 24 exposes away from vertical inside and outside four circulation
The distance from bottom of gas pond 2 is respectively 1/2 and 1/10 of available depth in vertical inside and outside four circulated aeration tanks 2, the suspension type filler
28 volume is 1/5 of spatial volume between the first deflector 23 and the second deflector 24.The riser tail of first deflector 23
The tail end riser of end and the second deflector 24 respectively with it is vertical inside and outside four circulated aeration tank 2 inwall gap lengths guarantee bubble and
Current are passed through, while each section of volumetric loading keeps identical, so as to can be rapid in different dissolved oxygen regions from microorganism
Adapt to.
The riser of the deflector 24 of first deflector 23 and second is respectively with a vertical 5-15 ° of angle, described
The transverse slat of one deflector 23 and the second deflector 24 is respectively from the horizontal by 5-15 ° of angle.
The vertical inside and outside delivery port side of four circulated aeration tank 2 is provided with temperature and dissolved oxygen probe 22, the temperature
And dissolved oxygen probe 22 is inserted into the space between the transverse slat of deflector 23 and the vertical inside and outside inwall of four circulated aeration tank 2.
The methods of four circulations continuous flow process Treating Municipal Sewages of the invention vertical inside and outside, as shown in figure 3, specifically according to
Lower step is carried out：
Step one, configures sludge
Sludge source is prepared sludge concentration and is existed in municipal sewage plant aeration tank in vertical inside and outside four circulated aeration tanks
The sludge of 3000-4000mg/L is inoculated with, it is vexed expose 1-2 days after start water inlet, inflow daily gradually increase make microorganism by
Gradually it is applicable, is continued to run with 1 day to after reaching design water, startup stage terminates, and the experiment startup optimization time was at 1 week or so；
Step 2, aeration prepares
System operation：Continuous stream operational parameter control, sludge concentration is 3000-4000mg/L in reaction tank, is started simultaneously at
Continuous aeration, in 2.0-3.0mg/L, hydraulic detention time is 8h to Dissolved Oxygen concentration Control, and return sludge ratio is 100%；
Step 3, aeration process
After air enters vertical inside and outside four circulated aeration tanks 2, minute bubbles are divided into and along first by boring aeration pipe 25
The riser of deflector 23 enters pond body, and then bubble rises to the transverse slat of the first deflector 23, is stopped by it, along horizontal movement to first
The transverse slat edge of deflector 23, with water movement part bubble in deflector region below, is moved downward by the stop of wall, with
The rising flowing of aeration, clockwise vortex, i.e., first race way is formed；The race way peripheral liquid is straight with oxygen
Contact, therefore dissolved oxygen content formation hyperoxia area higher, it is internal with the consumption and internally diffusion rate influence of dissolved oxygen
Dissolved oxygen region in formation；Remaining bubble continuously rises to the second deflector 24, and bubble continues to rise by the second deflector 24
Stop, be divided into three parts, a part is moved downward with current, return to the lower area of the first deflector 23, supplement aeration rising is made
Into negative pressure space, then rise with bubble to be formed Two Areas circulation；Slowly and without height dissolved due to this part water movement
Oxygen spreads, therefore forms LDO circulation；Another part does eddy flow between the first deflector 23 and the second deflector 24
Motion, forms the 3rd of counterclockwise movement circulation, the portion gas due to by first circulation consumption and the diffusion of partial oxidation,
Oxygen content is not high, therefore the circulation for being formed is Zhong Yang areas；Last part continues to rise the effusion water surface, mixes on a small quantity during this
Liquid returns to the bottom of the first deflector 23 and participates in circulation along the back side of the second deflector 24, forms the 4th race way, the part gas
Oxygen content is minimum in body, therefore is LDO area；Center is provided with suspension between first deflector 23 and the second deflector 24
Formula filler 28, can form a large amount of anaerobic organism films on filler；
Between the first deflector 23 and the vertical inside and outside base plate of four circulated aeration tank 2 dissolved oxygen concentration from center to the periphery by
Edged up height, and organic matter degradation occurs mainly in hyperoxia region, and titanium dioxide directly can be herein oxidized to for small organic molecule
Carbon and water；For molecular structure complexity, being difficult to biodegradable organic matter can be in middle oxygen or low oxygen area completion acidification hydrolization
After be transported to this, continue to complete oxidizing process；Anoxic and the presence in middle oxygen region, for microorganism denitrification provide it is favourable
Condition, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification, while filler is carried for growth of microorganism
Place is supplied, biomembrane has been formed, with denitrification ability higher.
The methods of four circulations continuous flow process Treating Municipal Sewages of the invention vertical inside and outside, municipal sewage is from raw water water tank 1
By intake pump 21 in vertical inside and outside four circulated aeration tanks 2 of stabilization feeding in sewage, two pieces of deflectors first are provided with it and are led
The stream deflector 24 of plate 23 and second, two pieces of water conservancy diversion board sizes are identical, the first deflector 23 and the riser of the second deflector 24 with it is vertical
There are 15 ° of inclination angles in direction, and the first deflector 23 and the transverse slat of the second deflector 24 have 15 ° of inclination angles with horizontal direction.By temperature and molten
The solution on-line monitoring change of oxygen probe 22, while aerator 25, its outer connection air pump 26 and gas flowmeter 27；It is vertical inside and outside
The water outlet of four circulated aeration tank 2 enters vertical sedimentation basin 3 by difference in height, and water outlet is flowed out through downflow weir 31 after precipitation, sedimentation basin 3
Mud discharging mouth 32 is inside provided with, sludge is back near the aeration tube of aeration tank through reflux pump 33.
Relatively conventional aeration tank bubble is ramped, and the vertical inside and outside bubble motion distance of four circulated aeration tank 2 is extended,
Contact area with sewage increases, and part bubble is circulated with sewage, improves oxygen transfer efficiency.Pollutant and microorganism
And oxygen is fully contacted, quickly removed, improve treatment effeciency, corresponding aeration rate is reduced, and has saved aeration energy
Consumption.
Due to foring the water impact to reaction tank bottom in the first deflector 23 and the region below of the second deflector 24
Motion, deposits reaction tank base sludge difficulty or ease, and with the continuous shuttling movement of water (flow) direction, therefore it is general to solve aeration tank bottom
All over deposition, the low problem of pond body utilization rate.
It is inflow daily less than 10000 cubic metres, dirty Organic substance in water and total nitrogen ratio present invention is generally directed to small water
Waste water of the example less than 5, solves in the prior art under conditions of entering organic matter of water scarcity, and reactor denitrification ability declines difficult drop
Solve the problems such as organic matter can not be removed, water outlet is not up to standard.The present invention passes through the deflector of increased first deflector 23 and second
24, increase anoxic anaerobic environment, hardly degraded organic substance clearance is improved, and carbon source to denitrification mistake is conveyed by loop structure
Journey, reaches the purpose of denitrogenation.
Embodiment
It is raw water to use city domestic sewage, and specific water quality is as follows：COD concentration is 200~300mg/L, NH4- N concentration is
12~15mg/L, TN concentration are 15~20mg/L, TP concentration is 4~6mg/L.Experimental system is as shown in figure 1, vertical four circulation is anti-
Ying Chi is made up of poly (methyl methacrylate) plate, 0.3m long, width 0.3m, 0.5m high, and available depth is 0.4m, and dischargeable capacity is 36L.
Carrying out practically is as follows：
1) in municipal sewage plant aeration tank, be made into sludge concentration is the vertical inside and outside sludge source of four circulated aeration tank 2
4000mg/L, before experiment commencement of commercial operation, culturing sludge 1 week, recovers its active.
2) normal operating phase：
1. daily hydraulic detention time is 8h, and sludge age is 18d；
2. whole technique uses continuum micromeehanics pattern, and flow of inlet water is 4.5L/h, and sludge reflux amount ratio is 80%, and water inlet exposes
Gas is carried out simultaneously, and dissolved oxygen control controls sludge concentration in reaction tank in 2.0mg/L using regular instantaneous spoil disposal.
3. experimental result is as shown in table 1 below,
After stable, traditional reaction tank effluent COD concentration is 20-50mg/L, and average removal rate is 88%；It is vertical inside and outside
The effluent COD concentration of four circulated aeration tank 2 is 15.0~30.0mg/L, clearance is maintained at more than 90%；Two reaction tanks are contrasted
NH4- N clearances be respectively 81.28% and 91.45, TN reached for clearance is respectively 89.57% and 90.19%, TP clearances
To more than 90%.The vertical inside and outside contaminant removal efficiency of four circulated aeration tank 2 more than 90%, and higher than traditional reaction tank.
Dissolved oxygen monitoring result shows：When reaching water outlet dissolved oxygen for 2.0mg/l, the vertical inside and outside aeration rate of four circulated aeration tank 2 is
0.12L/min, traditional reaction tank aeration rate is 0.15L/min, and vertical inside and outside four circulated aeration tanks 2 have saved aeration energy consumption.
Table 1
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. vertical inside and outside four the device of continuous flow process Treating Municipal Sewage is circulated, it is characterised in that including the city for setting gradually
City's sanitary sewage water tank (1), vertical inside and outside four circulated aeration tanks (2) and vertical sedimentation basin (3), the city domestic sewage water
Case (1) top delivery port is connected with vertical inside and outside four circulated aeration tanks (2) top side water inlet by water pipe, on the water pipe
It is provided with intake pump (21) and is inserted into vertical inside and outside four circulated aeration tanks (2) bottom, vertical inside and outside four circulated aeration tanks
(2) opposite side top delivery port is connected with the water inlet at the top of vertical sedimentation basin (3), vertical inside and outside four cyclic aerations
2 first deflectors (23) and the second deflector (24) of horizontal L-type are respectively arranged with from top to bottom in pond (2), and described first leads
The riser of stream plate (23) is located at vertically inside and outside four circulated aeration tanks (2) water inlet side and riser tail end is down, and described first leads
The transverse slat tail end of stream plate (23) is located at vertical inside and outside four circulated aeration tanks (2) delivery port side, and first deflector (23) is horizontal
There is space between plate and riser and vertical inside and outside four circulated aeration tanks (2) both sides inwall, second deflector (24) it is perpendicular
Plate is located at vertically inside and outside four circulated aeration tanks (2) delivery port side and riser tail end is down, the horizontal stroke of second deflector (24)
Plate tail end is located at vertical inside and outside four circulated aeration tanks (2) water inlet side, the second deflector (24) transverse slat and riser with it is perpendicular
To having space, described vertical inside and outside four circulated aeration tanks (2) water inlet one between the inwall of inside and outside four circulated aeration tank (2) both sides
The bottom of side is provided with boring aeration pipe (25), and the boring aeration pipe (25) is connected and exposure of perforating to extension with air pump (26)
Gas flowmeter (27), the center between first deflector (23) and the second deflector (24) are provided with tracheae (25)
It is provided with suspension type filler (28).
2. according to claim 1 vertical inside and outside four the device of continuous flow process Treating Municipal Sewage is circulated, its feature exists
In vertical sedimentation basin (3) top is provided with downflow weir (31), and vertical sedimentation basin (3) bottom is circumscribed with spoil disposal
Pipe (32), vertical sedimentation basin (3) bottom is provided with refluxing opening with vertical inside and outside four circulated aeration tanks (2) water inlet side
Bottom by pipeline communication, sludge reflux pump (33) is provided with the pipeline.
3. according to claim 1 vertical inside and outside four the device of continuous flow process Treating Municipal Sewage is circulated, its feature exists
In the transverse slat length of first deflector (23) and the second deflector (24) accounts for vertical inside and outside four circulated aeration tanks (2) respectively
The riser height of the 3/4 of total length, first deflector (23) and the second deflector (24) accounts for vertical inside and outside four circulations respectively
The tail end riser of the 2/5 of aeration tank (2) height, the first deflector (23) riser tail end and the second deflector (24) is away from vertical
Inside and outside four circulated aeration tank (2) distance from bottom is respectively the 1/2 and 1/ of vertical inside and outside four circulated aeration tanks (2) interior available depth
10, the volume of the suspension type filler (28) is 1/5 of spatial volume between the first deflector (23) and the second deflector (24).
4. according to claim 1 vertical inside and outside four the device of continuous flow process Treating Municipal Sewage is circulated, its feature exists
In the riser of first deflector (23) and the second deflector (24) is respectively with a vertical 5-15 ° of angle, described first
The transverse slat of deflector (23) and the second deflector (24) is respectively from the horizontal by 5-15 ° of angle.
5. according to claim 1 vertical inside and outside four the device of continuous flow process Treating Municipal Sewage is circulated, its feature exists
, described vertical inside and outside four circulated aeration tanks (2) delivery port side is provided with temperature and dissolved oxygen probe (22), the temperature and
Dissolved oxygen probe (22) is inserted into the space between deflector (23) transverse slat and vertical inside and outside four circulated aeration tanks (2) inwall.
6. methods of vertical inside and outside four circulations continuous flow process Treating Municipal Sewages, it is characterised in that specifically according to following steps
Carry out：
Step one, configures sludge
Vertical inside and outside four circulated aeration tanks (2) interior sludge source is prepared sludge concentration and is existed in municipal sewage plant aeration tank
The sludge of 3000-4000mg/L is inoculated with, it is vexed expose 1-2 days after start water inlet, inflow daily gradually increase make microorganism by
Gradually it is applicable, is continued to run with 1 day to after reaching design water, startup stage terminates, and the experiment startup optimization time was at 1 week；
Step 2, aeration prepares
System operation：Continuous stream operational parameter control, sludge concentration is 3000-4000mg/L in reaction tank, is started simultaneously at continuous
Aeration, in 2.0-3.0mg/L, hydraulic detention time is 8h to Dissolved Oxygen concentration Control, and return sludge ratio is 100%；
Step 3, aeration process
After air enters vertical inside and outside four circulated aeration tanks (2), minute bubbles are divided into and along first by boring aeration pipe (25)
Deflector (23) riser enters pond body, and then bubble rises to the first deflector (23) transverse slat, is stopped by it, along horizontal movement extremely
First deflector (23) transverse slat edge, with water movement part bubble in deflector region below, is transported downwards by the stop of wall
It is dynamic, flowed in the rising with aeration, form clockwise vortex, i.e., first race way；The race way peripheral liquid
With oxygen directly contact, therefore dissolved oxygen content is higher forms hyperoxia area, consumption and internally diffusion rate with dissolved oxygen
Influence, is internally formed middle dissolved oxygen region；Remaining bubble continuously rises to the second deflector (24), and bubble continues to rise receives second
The stop of deflector (24), is divided into three parts, and a part is moved downward with current, returns to the first deflector (23) lower area,
Supplement aeration rises the negative pressure space that causes, then rises with bubble and to form Two Areas circulation；Due to this part water movement
Slowly and without high-solubility oxygen diffusion, therefore form LDO circulation；Another part is led in the first deflector (23) and second
Swirling motion is done between stream plate (24), the 3rd circulation of counterclockwise movement is formed, the portion gas by first circulation due to being disappeared
The diffusion of consumption and partial oxidation, oxygen content is not high, therefore the circulation for being formed is Zhong Yang areas；Last part continues to rise effusion water
Face, a small amount of mixed liquor returns to the first deflector (23) bottom and participates in circulation along the second deflector (24) back side during this, is formed
4th race way, oxygen content is minimum in the portion gas, therefore is LDO area；
Between the first deflector (23) and vertical inside and outside four circulated aeration tanks (2) base plate dissolved oxygen concentration from center to the periphery by
Edged up height, and organic matter degradation occurs mainly in hyperoxia region, and titanium dioxide directly can be herein oxidized to for small organic molecule
Carbon and water；For molecular structure complexity, being difficult to biodegradable organic matter can be in middle oxygen or low oxygen area completion acidification hydrolization
After be transported to this, continue to complete oxidizing process；Anoxic and the presence in middle oxygen region, for microorganism denitrification provide it is favourable
Condition, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208635.4A CN106745757B (en) | 2017-03-31 | 2017-03-31 | Device and method for treating urban sewage by vertical internal and external four-cycle continuous flow process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208635.4A CN106745757B (en) | 2017-03-31 | 2017-03-31 | Device and method for treating urban sewage by vertical internal and external four-cycle continuous flow process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106745757A true CN106745757A (en) | 2017-05-31 |
| CN106745757B CN106745757B (en) | 2023-07-18 |
Family
ID=58966008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710208635.4A Active CN106745757B (en) | 2017-03-31 | 2017-03-31 | Device and method for treating urban sewage by vertical internal and external four-cycle continuous flow process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106745757B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107867754A (en) * | 2018-01-11 | 2018-04-03 | 鲁东大学 | A kind of energy-saving aeration pool device |
| CN107954516A (en) * | 2017-11-21 | 2018-04-24 | 江西省火电建设公司 | Circulation improvement A/O integrated sewage disposal techniques in one kind four |
| CN108128891A (en) * | 2018-01-11 | 2018-06-08 | 鲁东大学 | A kind of novel energy-saving is aerated pool device |
| CN108423804A (en) * | 2018-03-20 | 2018-08-21 | 鲁东大学 | A kind of iris type biological aerated filter |
| CN114751518A (en) * | 2022-05-05 | 2022-07-15 | 长春工程学院 | Alternate aerobic-anaerobic integrated biological treatment device, method and application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180560A (en) * | 2010-08-30 | 2011-09-14 | 长春工程学院 | Device and method for continuously and biologically treating urban sewage |
| WO2012010096A1 (en) * | 2010-07-20 | 2012-01-26 | 华南理工大学 | Device for synchronously removing nitrogen and phosphorus in mixed municipal sewage and fecal sewage by using a2/o-biomembrane and method thereof |
| CN103435156A (en) * | 2013-06-04 | 2013-12-11 | 深圳市地大东江环境研究院 | Low-energy and intelligent three-dimensional ecological external circulation nitrification method and apparatus |
| WO2015102246A1 (en) * | 2014-01-02 | 2015-07-09 | (주)티에스케이워터 | Apparatus for treating sludge and wastewater, comprising multistage ph control tank, and method for reducing nitrogen and phosphorus in sludge and wastewater by using same |
| CN206654777U (en) * | 2017-03-31 | 2017-11-21 | 石博诚 | The device of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030426A (en) * | 2013-03-07 | 2014-09-10 | 百氧生物科技有限公司 | Air change method in dissolved oxygen water generation process |
| CN104496015B (en) * | 2014-12-23 | 2016-04-06 | 东南大学 | A kind of microcapsule controlled-release oxygenation biological filter and oxygenation method |
-
2017
- 2017-03-31 CN CN201710208635.4A patent/CN106745757B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012010096A1 (en) * | 2010-07-20 | 2012-01-26 | 华南理工大学 | Device for synchronously removing nitrogen and phosphorus in mixed municipal sewage and fecal sewage by using a2/o-biomembrane and method thereof |
| CN102180560A (en) * | 2010-08-30 | 2011-09-14 | 长春工程学院 | Device and method for continuously and biologically treating urban sewage |
| CN103435156A (en) * | 2013-06-04 | 2013-12-11 | 深圳市地大东江环境研究院 | Low-energy and intelligent three-dimensional ecological external circulation nitrification method and apparatus |
| WO2015102246A1 (en) * | 2014-01-02 | 2015-07-09 | (주)티에스케이워터 | Apparatus for treating sludge and wastewater, comprising multistage ph control tank, and method for reducing nitrogen and phosphorus in sludge and wastewater by using same |
| CN206654777U (en) * | 2017-03-31 | 2017-11-21 | 石博诚 | The device of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107954516A (en) * | 2017-11-21 | 2018-04-24 | 江西省火电建设公司 | Circulation improvement A/O integrated sewage disposal techniques in one kind four |
| CN107867754A (en) * | 2018-01-11 | 2018-04-03 | 鲁东大学 | A kind of energy-saving aeration pool device |
| CN108128891A (en) * | 2018-01-11 | 2018-06-08 | 鲁东大学 | A kind of novel energy-saving is aerated pool device |
| CN108423804A (en) * | 2018-03-20 | 2018-08-21 | 鲁东大学 | A kind of iris type biological aerated filter |
| CN114751518A (en) * | 2022-05-05 | 2022-07-15 | 长春工程学院 | Alternate aerobic-anaerobic integrated biological treatment device, method and application |
| CN114751518B (en) * | 2022-05-05 | 2023-10-27 | 长春工程学院 | Alternate aerobic-anaerobic integrated biological treatment device, method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106745757B (en) | 2023-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106745757A (en) | The device and method of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage | |
| CN105217786B (en) | Based on DEAMOX reinforcing improvement subsection water inflow As2The apparatus and method of/O technique biological carbon and phosphorous removals | |
| CN105923774A (en) | Device and method for realizing sludge digestive fluid advanced nitrogen removal by three-section type short-cut nitrification-anaerobic ammonia oxidation-short-cut denitrification process | |
| CN102180543B (en) | Highly-efficient stable bio-doubling sewage treatment device | |
| CN105502657A (en) | Device and method for treating high-concentration ammonia-nitrogen wastewater in aeration-anaerobic circulation mode | |
| CN106746385A (en) | The device and method of the vertical three circulation technologies Treating Municipal Sewage of pulling flow type | |
| CN107055781A (en) | The device and method of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage | |
| CN105967435A (en) | Double-circulation nitrogen and phosphorus removal wastewater treatment system and process | |
| CN108249691B (en) | Integrated low-energy-consumption distributed village and town domestic sewage treatment system | |
| CN103011515A (en) | Soybean wastewater biochemical treatment process and device | |
| CN206654777U (en) | The device of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage | |
| CN106745712A (en) | The device and method of vertical internal-external double circulation continuous flow process Treating Municipal Sewage | |
| CN106746384A (en) | The device and method of the vertical multi cycle Process for Treating Municipal of pulling flow type | |
| CN106830332A (en) | The device and method of the inverse recirculation reactor Treating Municipal Sewage of air-flow continuum micromeehanics three | |
| CN106587531A (en) | Treatment system and method for synthesizing type industrial park sewage | |
| CN206654778U (en) | The device of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage | |
| CN206654773U (en) | The device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage | |
| CN115465953A (en) | AOD biochemical reaction system for treating sewage and sewage treatment method thereof | |
| CN203112653U (en) | Soybean product wastewater biochemical treatment device | |
| CN206751510U (en) | The device of the inverse recirculation reactor Treating Municipal Sewage of air-flow continuum micromeehanics three | |
| CN206328209U (en) | The anaerobic oxidation ditch of intensified anti-nitrated denitrogenation dephosphorizing | |
| CN206970401U (en) | The device of the vertical three circulation technologies Treating Municipal Sewage of pulling flow type | |
| CN206033378U (en) | Nitrogen and phosphorus removal sewage treatment device | |
| CN206069628U (en) | A kind of MBBR sewage disposal systems | |
| CN201999827U (en) | High-efficiency stable sewage treatment device with bio-doubling process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |